Method for detecting length of electrode of arc furnace

Abstract

The invention discloses a method for detecting the length of an electrode of an arc furnace; a force sensor is arranged at the joint of an electrode lifting mechanism and used for detecting electrical signals of stress when the electrode is in quiescent condition, constant rise and constant fall, and for outputting the electrical signals to an A / D sampling plate, so that the electrical signals are converted into digital signals to be output to a computer; and the computer computes the length of the working end of the electrode. The method has the positive benefits that by the adoption of the method, the length value of the working end of the electrode can be detected accurately in real time, an operator can accurately control the work points of the electrode to be on the same horizontal plane, the arc power of the three-phase electrode is kept balanced, the concentration rate of a temperature field in the arc furnace is improved, the natural power coefficient of the arc furnace is improved, the electro-thermal conversion efficiency of the arc furnace is improved, electro-thermal efficiency is improved, power consumption of smelting is reduced, the yield is improved, the roasting condition of a self-roasting electrode can be accurately judged, and soft and hard broken incidence of the electrode can be prevented and reduced.

Description

technical field [0001] The invention relates to a method for detecting the length of an electrode of an electric arc furnace, in particular to a method for detecting the length of an electrode working end of a submerged arc furnace (resistance arc furnace). Background technique [0002] Submerged arc furnaces cover various resistance electric arc furnaces such as calcium carbide furnaces, ferroalloy furnaces, and yellow phosphorus furnaces. The smelted products include calcium carbide, yellow phosphorus, ferrosilicon, ferrochromium, silicon manganese, ferronickel, corundum, ferrotitanium, lead and zinc And other products, the core theory of its smelting is: preheating the charge through the charge current, ionizing the furnace gas to form a directional high-temperature ion flow-arc, converting electrical energy into heat energy, and providing a high enough temperature field for the reduction reaction. [0003] The state of the arc depends on the distance between the electrod...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a detection method for the length of the electrode of the submerged arc furnace, which effectively solves the problem that the length of the working end of the electrode in the submerged arc furnace smelting industry is difficult to obtain accurately, especially in abnormal conditions. In the smelting state, the length of the working end of the electrode cannot be accurately obtained